A below-grade smart irrigation object includes: an input signal portion configured to receive an energizing signal for the below-grade smart irrigation object; an output signal portion configured to indicate the location of the below-grade smart irrigation object in response to receiving the energizing signal; and an irrigation portion configured to effectuate an irrigation operation.

A below-grade smart irrigation object includes: an input signal portion configured to receive an energizing signal for the below-grade smart irrigation object; an output signal portion configured to indicate the location of the below-grade smart irrigation object in response to receiving the energizing signal; and an irrigation portion configured to effectuate an irrigation operation.

Optional attachments, such as a drop seeder and a sprayer unit, can be removably attached to the front plate of a turf aerator. The attachment includes a hitch slideably received in a tubular receiver and pinned therein by a pin. A lock is pivotal relative to the attachment from an unlocked position to a locked position with the front plate received in slots of the lock. The lock is pivoted relative to the attachment by a rod which is threadably received in the hitch. Valve openings in a valve plate are aligned or mis-aligned with lower openings formed in a hopper mounted to the hitch by a linear electric actuator. A lever is pivotably mounted to a housing which is removably attached to the chassis of the turf aerator and activates the linear electric actuator and a switch controlling an agitator. A valve is alternately in fluid communication with a spray nozzle mounted relative to the hitch and a spray wand. A switch mounted to the chassis is electrically connected to a motor driving a pump in fluid communication with a tank and the valve.

Optional attachments, such as a drop seeder and a sprayer unit, can be removably attached to the front plate of a turf aerator. The attachment includes a hitch slideably received in a tubular receiver and pinned therein by a pin. A lock is pivotal relative to the attachment from an unlocked position to a locked position with the front plate received in slots of the lock. The lock is pivoted relative to the attachment by a rod which is threadably received in the hitch. Valve openings in a valve plate are aligned or mis-aligned with lower openings formed in a hopper mounted to the hitch by a linear electric actuator. A lever is pivotably mounted to a housing which is removably attached to the chassis of the turf aerator and activates the linear electric actuator and a switch controlling an agitator. A valve is alternately in fluid communication with a spray nozzle mounted relative to the hitch and a spray wand. A switch mounted to the chassis is electrically connected to a motor driving a pump in fluid communication with a tank and the valve.

A powered lawn dethatcher with a dethatching mechanism for dethatching lawn, a driving mechanism for driving the dethatching mechanism, and a collection mechanism arranged to collect at least some dust and debris agitated by the dethatching mechanism during operation.

A turf maintenance machine includes: a moveable platform configured to move the turf maintenance machine within an area to be maintained; a wireless transmitter system configured to provide a wireless energizing signal to a below-grade smart irrigation object; and a turf aeration system configured to aerate turf within the area to be maintained.

A turf maintenance machine includes: a moveable platform configured to move the turf maintenance machine within an area to be maintained; a wireless transmitter system configured to provide a wireless energizing signal to a below-grade smart irrigation object; and a turf aeration system configured to aerate turf within the area to be maintained.

A below-grade smart irrigation object includes: an input signal portion configured to receive an energizing signal for the below-grade smart irrigation object; an output signal portion configured to indicate the location of the below-grade smart irrigation object in response to receiving the energizing signal; and an irrigation portion configured to effectuate an irrigation operation.

A below-grade smart irrigation object includes: an input signal portion configured to receive an energizing signal for the below-grade smart irrigation object; an output signal portion configured to indicate the location of the below-grade smart irrigation object in response to receiving the energizing signal; and an irrigation portion configured to effectuate an irrigation operation.

A smart tine assembly includes: a tine configured to aerate turf; and a damage sensing system configured to: sense when the tine is damaged, and generate a damaged tine signal.